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ZSheets-Shee't1. B. HERSHEY.

' MACHINES FOR WELDING CHAIN-LINKS; I Nu-193,084. Patented Ju1y1-7,1877.

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V '2Sheets-Sheet2. B. HERSHEY, MACHINES FOR WELDING cum-LINKS.

No. 193,084 Patented. July 17,1877.

N. PErE'a s, PHOTO-UTHDGRAFHER, wAsmum'on. u. c

UN T D sums BENJAMIN HERSHEY, or n ne; Ass-rGN'oR 'ro rir rsnnne eH AIN ANDQGAR LINK MANUFAGTNBPNG COMPANY, QFNEW' BRIGHTON, PENNsYLvnNI-A;

MA cm was? FOR WE ll-nine cmx m a t mes;

- a FMPRQWEMENTW To all whom it may concern":

knownthat I, B

ENJAMIN HERSHEY, Pennsylvania,

relate to that class of achinesi shown and (1G1 s Patent of the United granted tome A-ugust 3, esent invention consists of provements chain-link-welding m bed in the Letter States No.166,373 1875 and my pr cross-piece 0, which is s'ecuredto thewupper die-chamberare secured to the bed-pie'ce gp c0 inbined" swagin ofthe organiza vices by which ing dies are made to c and finishing:chain-link Nearly similar swa hown in my in; connecti pressing the link sidewis -w lii'c'h I designated (B d swaging and compress nish the chain-links atte welded in swaging-d-ies. My present invention is d and finish chain-links in a si without any preliminar rmed in another set 0 In the present case, ing die is deeply recess projecting side wings compression to the link in conjunction with the which it effects bythe pre surface upon the end of t panying drawings are as follows: of my machine. g. 3, a longitudinal the line as a; on Fig. through the g and com pressing dies, and tion i-na machine of thedeg'ing and'compress- O-Operate in welding ging and compressing? application of even date a with dies for COLD-1 f ase A, the coming diesare used r they have been esigned to weld ngle set of dies welding operation the endwise-compressed, and by means of its inisters a sidewise preparatory to and dwise compression, ssure of its concave Figure 1 is a front elevation a side view- Fi ection through a horizontal section line y 3 on Fi Referring to the drawin ed-plate A afford standards B B GG. The stand horizontal bearings for the ca are each. bent inwardly to aft'o mgs b b for the bars or guid gate or frame which carrie The drop-die is bolted to the gs, it will be seen support for the ards B B afford m-shaft H, and rd vertical beare-rods d d of the s the drop-die f. under side of the and the root h", of the" die-chamber is per:

forated to afl'ord a vertical bearingifor the i e--- ciprocatingsdrop-die f Thedrop-diefhasits face recessed toconform to the sha e of the jlink, and is provided with a'central recess to vreceivethe tongue f of the recessed stationiary dief t i Y Thechain-link in; the process of welding is suppo'rtedt against .the' endwise th'rust of the compressing-die Q by the back-rest T, which fiS'SBGUIMltOtlIG frontend ofl thebed-piece q,

and presentsaconcave 'face icorrespond i ng to the shapeof the end of the-link The outer end of the stationary die f is cut away, so as to leave the space t between the outer end of the stationary die and the inner end of the back-rest T to contain the chainlink upon which the link to be welded is hung.

Reciprocating motion is imparted to the compressing-die Q by means of the togglejoint Q which is actuated, through the pitman Q and cam-lever Q, by the cam Q The cam-lever Q is capable of lateral motion, and when the machine is not in use is thrown out of the plane in which the cam Q revolves by the fiat spring Q The pitman Q and its connections are pushed upward by the curved spring Q one end of which is secured to the bed-plate of the machine, while the other end catches under the lower end of the pitman.

In this machine, as in my others, to which I have already referred, torsion-springs N are used to act upon the cross-bars G of the gate, and increase the force with which the gate falls. These springs are secured to. the under side of the plate N, which is pivoted to the rear standards G G, and is slotted at its into the plane in which the cam Q forward end to engage the stoprbar O. a The upper end of the stop-bar Ois inclined outwardly, and passes through the slot 0 in the spring-plate N. Thus when the plate N descends the slot 0 acting upon the end 0 of the stop-bar, throws the stop-bar outward, and withdraws from under the lower crossbar 0 the shoulder 0 upon which the crossbar G rests, as shown in Fig. 3, when the machine is notin operation. The spring-plate N is connected with the pitman Q by means of the link N and adjustable bolt N so that when the pitman is drawn down by the action of the cam Q upon the cam-lever Q the link N pulls the plate N down, and thus compresses the ends of the torsion springs N against the upper surface of the cross-bar 0 When it is desired to set the machine in operation the cam-lever Q is pushed sidewise v revolves, by means of the push-bar R, which is actuated by the rocking foot-lever R.

It will be seen that a single cam, Q, performs the combined functions of operating the toggle mechanism, and of bringing the torsion-springs into action, and of throwing the stop-bar out of engagement with the die gate or frame.

In operating my machine aheated blank, bent into the proper shape, and hung upon the end link of a chain, is deposited upon the stationary'die f in front of the back-rest T. The rocking foot-lever R is then pressed down, thus bringing the dies into action.

The reciprocating cam Q has its face deeply recessed, giving to it the shape of the letter U. When brought into action, therefore, the side wings q of the die embrace the blank, ailld prevent the blank from expanding latera y.

The side wings q derive lateral support from the Walls of the die-chamber, and act as wedges, respectively, entering between the opposite walls of the die-chamber and the blank, andthus administering to the blank a CI'OSS-WlSe compression.

.Theback-restT supports the link during its subjection to the endwise compression effected by the forward movement of the compressing-die Q, and at the instant when the compressing-die Q has completed its forward movement the drop-die f administers its stroke, and welds the ends of the blank together. The link is thus welded and finished to'the size required.

I claim as my invention in a machine for welding and finishing chain-links- A drop-die and a stationary die, having their opposed faces suitably recessed to contain one end and a portion of both sides of a chain-link, in combination with a deeply-recessed concave-faced compressing-die and a concave-faced stationary die or back-rest, such compressing-die having a reciprocating motion perpendicular to the direction of the motion of the drop-die, substantially as and for thepurposes set forth.

2. The transverse recess or space t between the outer end of the stationary die f and theinner end of the back-rest T, for the purpose of containing the chain'link, upon which the link to be welded is hung, as set forth.

3. The cam Q and the cam-lever Q in combination with the toggle mechanism (conssting of the pitman Q and the toggle-joint Q) and the torsion-spring plate N the adjustable bolt N and the link N 4. The foot-lever R, push-bar 1t, cam-lever in combination with the tog- Q and cam Q gle mechanism, link N adjustable bolt N torsion-spring plate N and stop-bar O.

BENJAMIN HERSHEY.

Witnesses WM. WARWICK, GEORGE S. SMITH, 

